A broadband antenna for mobile communication having a desired antenna characteristic in frequency bands for portable phones. A metallic plate (16) having a suitable shape is disposed on a carrier (14) provided on a circuit board (10). The metallic plate (16), a grounding plate (12), and the circuit board (10) are electrically interconnected through an earthing wire (18) and a feed wire (20) so as to constitute first and second antenna elements resonant as an inverted-F antenna in a second frequency band higher than a first frequency band. A third antenna element (24) resonant in a third frequency band higher than the second frequency band is provided on the side face of the carrier (14). The base of the third antenna element (24) is electrically connected to the feed wire (20). The end of the second antenna element is spaced from that of the third one (24) by 0.1 wavelength or more of the third frequency band. The end of the third antenna element is spaced from the grounding plate (12) by 0.01 wavelength of the third frequency band. The third antenna element is resonant in a fourth frequency band higher than the third one. A matching circuit for matching the third antenna element with the third frequency band may be provided.
